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FLUSHING, N.Y. --- North Carolina freshmen Ashley Dai and Whitney Kay defeated Penn's Sonya Latycheva and Agustina Sol-Eskenazi to advance to the quarterfinals of the 2012 USTA/ITA National Indoor Intercollegiate Championships Friday at the USTA Billie Jean King National Tennis Center.

Dai and Kay rushed out to a 7-3 lead on the strength of a pair of service breaks before holding on for an 8-5 victory. They will face top-seeded and defending champions Kaitlyn Christian and Sabrina Santamaria of USC.